agenttesla | 6a8b7dcb6b3842bb2ca8f82053f391e99ff30020187b885654cf11c542c4b45a

General

Target

Halkbank_Ekstre_20240922_080921_689429.exe
Size

110KB
MD5

c8cea26640b2fa181571afd43c2e4477
SHA1

5b9e511450b327634fcc620814ebf42cb57b0c91
SHA256

261f4e785355cfd784f655fe0fc4a67be3cc18bb09e742b0187cfcc284fa5240
SHA512

20d9aca79e7034fdd1dbd2b785af17f973c0b9a2ab38dd40338dc0217754d2ea1fd6f00ad9d60bf761dc9d8c135acf32ebd9064facc3e0f3dc9790c3cbd00212
SSDEEP

1536:Y48kc/9ORkoOQzhSppeT//142G1Fq9uelIA630VDx:8kE9OuDp21DiqAEVDx

Score

10^/10

agenttesla credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.zqamcx.com
Port:
587
Username:
[email protected]
Password:
Anambraeast@
Email To:
[email protected]

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2068 set thread context of 2820	2068	Halkbank_Ekstre_20240922_080921_689429.exe	30

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Halkbank_Ekstre_20240922_080921_689429.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2820	RegAsm.exe
2820	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2068	Halkbank_Ekstre_20240922_080921_689429.exe
Token: SeDebugPrivilege	2820	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2820	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 2820	2068	Halkbank_Ekstre_20240922_080921_689429.exe	30
PID 2068 wrote to memory of 2820	2068	Halkbank_Ekstre_20240922_080921_689429.exe	30
PID 2068 wrote to memory of 2820	2068	Halkbank_Ekstre_20240922_080921_689429.exe	30
PID 2068 wrote to memory of 2820	2068	Halkbank_Ekstre_20240922_080921_689429.exe	30
PID 2068 wrote to memory of 2820	2068	Halkbank_Ekstre_20240922_080921_689429.exe	30
PID 2068 wrote to memory of 2820	2068	Halkbank_Ekstre_20240922_080921_689429.exe	30
PID 2068 wrote to memory of 2820	2068	Halkbank_Ekstre_20240922_080921_689429.exe	30
PID 2068 wrote to memory of 2820	2068	Halkbank_Ekstre_20240922_080921_689429.exe	30
PID 2068 wrote to memory of 2820	2068	Halkbank_Ekstre_20240922_080921_689429.exe	30
PID 2068 wrote to memory of 2820	2068	Halkbank_Ekstre_20240922_080921_689429.exe	30
PID 2068 wrote to memory of 2820	2068	Halkbank_Ekstre_20240922_080921_689429.exe	30
PID 2068 wrote to memory of 2820	2068	Halkbank_Ekstre_20240922_080921_689429.exe	30

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20240922_080921_689429.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20240922_080921_689429.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2068
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2820

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2068-0-0x0000000074BDE000-0x0000000074BDF000-memory.dmp

Filesize
4KB

Download
memory/2068-1-0x0000000000960000-0x0000000000984000-memory.dmp

Filesize
144KB

Download
memory/2068-2-0x0000000074BD0000-0x00000000752BE000-memory.dmp

Filesize
6.9MB

Download
memory/2068-14-0x0000000074BD0000-0x00000000752BE000-memory.dmp

Filesize
6.9MB

Download
memory/2820-9-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2820-13-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2820-11-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2820-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2820-6-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2820-5-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2820-4-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2820-3-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download

Analysis

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